The area of a circle is A=pi(r)^2. Since the diameter is 13, the radius would be 6.5. Doing the formula (3.14)(6.5)^2, the answer would be 132.665.
5(2n – 2) = 5(23n + 10)
10n - 10 = 115n + 50
10n - 115n = 50 + 10
-105n = 60
105n = -60
105n/105 = -60/105
n = -4/7
Answer:
a=36
Step-by-step explanation:
because look 0a=a
0a=36
a=36
Answer:
x=4.0625 cm
Step-by-step explanation:
The Pythagorean theorem states that the square of the hypotenuse of a right triangle equals the sum of the squares of the two legs.
Not knowing which is the hypotenuse, lets assume that (x+5)cm is the hypotenuse:
(x+5)^2= 9^2+(x-3)^2
(x^2+10x+25)=81+(x^2-6x+9)
x^2+10x+25=81+x^2-6x+9
16x=65
x=4.0625
Checking:
(4.0625+5)^2=9^2+(4.0625-3)^2
82.1289=82.1289
Answer:
each folder costed 0.35
Step-by-step explanation:
8.75 divided by 25 would have given you the answer